ML040090054

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Draft RAI Re. Your Proposed Amendment on SLMCPR for NMP2
ML040090054
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 01/09/2004
From: Tam P
NRC/NRR/DLPM/LPD1
To: Dosa J, Leonard S
Nine Mile Point
References
TAC MC1370
Download: ML040090054 (2)


Text

From: Peter Tam To: John Dosa; Steven Leonard Date: 1/9/04 7:39AM

Subject:

Draft RAI re. your proposed amendment on SLMCPR for NMP2 (TAC MC1370)

John:

The NRC staff is reviewing your November 20, 2003, submittal proposing an amendment to the NMP2 Technical Specifications, specifically regarding safety limit minimum critical power ratio (SLMCPR) . The NRC staff has the following questions and comments concerning your submittal:

1. Please identify the design record file to support this amendment, and provide a summary table or figure to show the number of rods that might experience boiling transition as a function of the nominal MCPR.
2. Provide the assumptions and bases to establish the reference core loading pattern shown in Figure 1 of Attachment 4 for Cycle 10 operation and provide the rationale to place thrice burned GE11 fuel at the center of the core.
3. Based on Table 1 results in Attachment 4 of the submittal, please provide the rationale for an increase of the calculated SLMCPR value for Cycle 10 operation while its product of parameters for the core bundle-by-bundle MCPR distribution and for the bundle pin-by-pin power/R-factor distribution is lower than that for Cycle 9 operation.

Call me to schedule a conference call with our reviewer, Tai Huang, to discuss these questions and comments. This e-mail aims solely to prepare you and others for the proposed conference call. It does not formally convey an NRC staff position, nor does it formally request for additional information. All the questions and comments in this e-mail are subject to dispostion as a result of the proposed conference call.

Peter S. Tam, Senior Project Manager Project Directorate I-1 Division of Licensing Project Management Office of Nuclear Reactor Regulation e-mail: pst@nrc.gov Tel.: 301-415-1451 CC: Tai Huang Mail Envelope Properties (3FFEA0E8.B6B : 10 : 20510)

Subject:

Draft RAI re. your proposed amendment on SLMCPR for NMP2 (TAC MC1370)

Creation Date: 1/9/04 7:39AM From: Peter Tam

Created By: PST@nrc.gov Recipients Action Date & Time owf2_po.OWFN_DO Delivered 01/09/04 07:39AM TLH1 CC (Tai Huang) constellation.com Transferred 01/09/04 07:39AM John.Dosa (John Dosa) nmp.cn.com Transferred 01/09/04 07:39AM Steven.Leonard (Steven Leonard)

Post Office Delivered Route owf2_po.OWFN_DO 01/09/04 07:39AM constellation.com nmp.cn.com Files Size Date & Time MESSAGE 2865 01/09/04 07:39AM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard Reply Requested: No Return Notification: None Concealed

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